Watlow F4T User Manual

Watlow F4T • 149 • Chapter 5 Function Reference
Signals
Direction
Label Type Function
Receivers
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
- - - - Digital Input to logic function
Transmitter - - - - Digital
True when at least one of the inputs is false, otherwise
false
Function
To detect when at least one inputs is false, set Function to Nand.
Error Handling
Use Error Handling to select the output's value and error status when the function cannot de-
finitively determine the result.
Options:
• True Good: output's value is true (on) with no error
• True Bad: output's value is true (on) and has an error
• False Good: output's value is false (off) with no error
• False Bad: output's value is false (off) and has an error
Equal To
If all the inputs are false (off, 0%) or all the inputs are true (on,
100%), the output is true (on, 100%). Otherwise, the output is
false (off, 0%).
Only connected inputs are considered by the logic operation; in-
puts that are not connected are ignored. The truth table at the
right illustrates the outcomes for three inputs.
Inputs Output
FFF T
FFT F
FTF F
FTT F
TFF F
TFT F
TTF F
TTT T
F = False (0%, off)
T = True (100%, on)

Watlow F4T Specifications

General

Inputs	Thermocouple, RTD, mA, V
Outputs	Relay, SSR, mA, V
Communication	Ethernet, Modbus RTU
Data Logging	Yes
Certifications	CE, UL, cUL, RoHS
Control Modes	PID, On/Off
Power Supply	100 to 240 VAC
Operating Temperature	0 to 50°C
Enclosure Rating	IP65
Display	4.3 in. (109 mm) color touch panel LCD
Control Loops	Up to 4